DL questions acceptance ratio per month

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Russian Language

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WITH
m as (

SELECT
  DATEADD(mm, (Year(Posts.CreationDate) - 1900) * 12 + Month(Posts.CreationDate) - 1, 0) AS Month,
  COUNT(*) AS Questions

FROM Tags
  LEFT JOIN PostTags ON PostTags.TagId = Tags.Id
  LEFT JOIN Posts ON Posts.Id = PostTags.PostId
  LEFT JOIN PostTypes ON PostTypes.Id = Posts.PostTypeId

WHERE
  Tags.TagName IN (
    'tensorflow',
    'pytorch',
    'keras'
  ) AND
  
  Year(Posts.CreationDate) > 2015
  AND
  
  PostTypes.Name = 'Question'
  
GROUP BY
  Year(Posts.CreationDate), Month(Posts.CreationDate), Tags.TagName


),
ma as (

SELECT
  DATEADD(mm, (Year(Posts.CreationDate) - 1900) * 12 + Month(Posts.CreationDate) - 1, 0) AS Month,
  COUNT(*) AS Questions

FROM Tags
  LEFT JOIN PostTags ON PostTags.TagId = Tags.Id
  LEFT JOIN Posts ON Posts.Id = PostTags.PostId
  LEFT JOIN PostTypes ON PostTypes.Id = Posts.PostTypeId
  LEFT JOIN Posts as Answers ON Posts.AcceptedAnswerId = Answers.Id

WHERE
  Tags.TagName IN (
    'tensorflow',
    'pytorch',
    'keras'
  ) AND
  
  Year(Posts.CreationDate) > 2015
  AND
  
  PostTypes.Name = 'Question'
  
  AND
  
  DATEDIFF(DAY, Posts.CreationDate, Answers.CreationDate) < 1
  
GROUP BY
  Year(Posts.CreationDate), Month(Posts.CreationDate), Tags.TagName

)

SELECT m.Month, sum(m.Questions) as Questions, sum(ma.Questions) as SolvedQuestions
FROM m JOIN ma on m.Month=ma.Month
GROUP BY
  m.Month

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